Integration of Digital Dental Casts in Cone Beam Computed Tomography Scans-a Clinical Validation Study

Overview

Journal Clin Oral Investig

Specialty Dentistry

Date 2017 Sep 22

PMID 28932947

Citations 11

Authors

Frits A Rangel

Thomas J J Maal

Martien J J de Koning

Ewald M Bronkhorst

Stefaan J Berge

Anne Marie Kuijpers-Jagtman

Affiliations

Soon will be listed here.

Abstract

Objectives: Images derived from cone beam computed tomography (CBCT) scans lack detailed information on the dentition and interocclusal relationships needed for proper surgical planning and production of surgical splints. To get a proper representation of the dentition, integration of a digital dental model into the CBCT scan is necessary. The aim of this study was to validate a simplified protocol to integrate digital dental models into CBCT scans using only one scan.

Materials And Methods: Conventional protocol A used one combined upper and lower impression and two CBCT scans. The new protocol B included placement of ten markers on the gingiva, one CBCT scan, and two separate impressions of the upper and lower dentition. Twenty consecutive patients, scheduled for mandibular advancement surgery, were included. To validate protocol B, 3-dimensional reconstructions were made, which were compared by calculating the mean intersurface distances obtained with both protocols.

Results: The mean distance for all patients for the upper jaw is 0.39 mm and for the lower jaw is 0.30 mm. For ten out of 20 patients, all distances were less than 1 mm. For the other ten patients, all distances were less than 2 mm.

Conclusions: Mean distances of 0.39 and 0.30 mm are clinically acceptable and comparable to other studies; therefore, this new protocol is clinically accurate.

Clinical Relevance: This new protocol seems to be clinically accurate. It is less time consuming, gives less radiation exposure for the patient, and has a lower risk for positional errors of the impressions compared to other integration protocols.

Citing Articles

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Accuracy evaluation of dental CBCT and scanned model registration method based on pulp horn mapping surface: an in vitro proof-of-concept.

Wu D, Jiang J, Wang J, Zhou S, Qian K BMC Oral Health. 2024; 24(1):827.

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Digital registration versus cone-beam computed tomography for evaluating implant position: a prospective cohort study.

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Evaluation of the impact of reference tooth morphology and alignment on model measurement accuracy.

Mao Z, Jia Y, Zhang Y, Xu J, Wu Z, Mao F Ann Transl Med. 2022; 10(12):670.

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